A good, large Schiek-type compressor/compressorium in solid brass made for the English market. Measuring 10 x 4.5 cm., it has an unusual pivot block and oversized rotating circle (3.5 cm.) for reversal of the upper pivoting lens/glass measuring 3.5 cm. in diameter. Used but not abused, this slide/coverslip mounting device must have been produced for a professional slide maker. Very stable and meant to sit flat on the bench (no legs/pins), it has a fine thread knurled screw to raise and lower the arm. I have found no other example in collections or in the literature. One small knibble to lower glass.
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Mark Hacking (Scientifica Opticae Inc.) has been an avid collector/dealer for over 30 years. A former Science teacher, he has an innate love for anything natural or mechanical. Specializing in optical (microscopes, telescopes), surveying, medical, weighing and drawing instruments, he is an active participant of the Scientific Instrument Fair in London. Living in Stratford, Ontario, Canada, with his wife and two children; Mark looks forward to meeting as many fellow collectors as possible, and has a worldwide following on eBay (Sciopti).
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